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RTOp_TOp_inv_of_difference.c
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00001 /*
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00003 // ***********************************************************************
00004 // 
00005 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
00006 //                  Copyright (2003) Sandia Corporation
00007 // 
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00042 */
00043 
00044 /* */
00045 /* Note: This file was created automatically by 'new_rtop.pl' */
00046 /*       on 6/27/2002 at 20:41 */
00047 /* */
00048 
00049 #define max(a,b) ( (a) > (b) ? (a) : (b) )
00050 #define min(a,b) ( (a) < (b) ? (a) : (b) )
00051 
00052 #include "RTOp_TOp_inv_of_difference.h"
00053 #include "RTOp_obj_value_vtbl.h"  /* vtbl for operator object instance data */
00054 
00055 
00056 
00057 /* Implementation functions for RTOp_RTOp */
00058 
00059 static int RTOp_TOp_inv_of_difference_apply_op(
00060   const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data
00061   , const int num_vecs, const struct RTOp_SubVector vecs[]
00062   , const int num_targ_vecs, const struct RTOp_MutableSubVector targ_vecs[]
00063   , RTOp_ReductTarget reduct_obj )
00064 {
00065   /* */
00066   /* Declare local variables */
00067   /* */
00068 
00069     /* Access to the operator object instance data */
00070     RTOp_value_type *alpha = (RTOp_value_type*)obj_data;
00071     /* Vector data */
00072     RTOp_index_type           sub_dim;
00073     /* z0 */
00074     RTOp_value_type           *z0_val;
00075     ptrdiff_t                 z0_val_s;
00076     /* v0 */
00077     const RTOp_value_type     *v0_val;
00078     ptrdiff_t                 v0_val_s;
00079     /* v1 */
00080     const RTOp_value_type     *v1_val;
00081     ptrdiff_t                 v1_val_s;
00082 
00083     register RTOp_index_type  k;
00084 
00085   /* */
00086   /* Validate the input */
00087   /* */
00088     if( num_vecs != 2 || ( num_vecs && vecs == NULL ) )
00089         return RTOp_ERR_INVALID_NUM_VECS;
00090     if( num_targ_vecs != 1 || ( num_targ_vecs && targ_vecs == NULL ) )
00091         return RTOp_ERR_INVALID_NUM_TARG_VECS;
00092     if( /* Validate sub_dim */
00093         vecs[1].sub_dim != vecs[0].sub_dim
00094         || targ_vecs[0].sub_dim != vecs[0].sub_dim
00095         )
00096         return RTOp_ERR_INCOMPATIBLE_VECS;
00097     assert(obj_data);
00098 
00099 
00100   /* */
00101   /* Get pointers to data */
00102   /* */
00103     sub_dim       = vecs[0].sub_dim;
00104     /* z0 */
00105     z0_val        = targ_vecs[0].values;
00106     z0_val_s      = targ_vecs[0].values_stride;
00107     /* v0 */
00108     v0_val        = vecs[0].values;
00109     v0_val_s      = vecs[0].values_stride;
00110     /* v1 */
00111     v1_val        = vecs[1].values;
00112     v1_val_s      = vecs[1].values_stride;
00113 
00114 
00115   /* */
00116   /* Apply the operator: */
00117   /* */
00118     /*    element-wise transformation : z0 = alpha/(v0-v1); */
00119     /* */
00120     for( k = 0; k < sub_dim; ++k, v0_val += v0_val_s, v1_val += v1_val_s, z0_val += z0_val_s )
00121     {
00122         /* Element-wise transformation */
00123 /*        if (fabs((*v0_val)-(*v1_val)) > 5.562685e-309) */
00124     { (*z0_val) = (*alpha)/((*v0_val)-(*v1_val)); }
00125 /*  else */
00126 /*    { (*z0_val) = 1.797693e+308; } */
00127     }
00128 
00129   return 0; /* success? */
00130 }
00131 
00132 /* Virtual function table */
00133 const struct RTOp_RTOp_vtbl_t RTOp_TOp_inv_of_difference_vtbl =
00134 {
00135   &RTOp_obj_value_vtbl
00136   ,&RTOp_obj_null_vtbl
00137   ,"TOp_inv_of_difference"
00138   ,NULL
00139   ,RTOp_TOp_inv_of_difference_apply_op
00140   ,NULL
00141   ,NULL
00142 };
00143 
00144 /* Class specific functions */
00145 
00146 int RTOp_TOp_inv_of_difference_construct( RTOp_value_type alpha,  struct RTOp_RTOp* op )
00147 {
00148 #ifdef RTOp_DEBUG
00149   assert(op);
00150 #endif
00151   op->obj_data  = NULL;
00152   op->vtbl      = &RTOp_TOp_inv_of_difference_vtbl;
00153   op->vtbl->obj_data_vtbl->obj_create(NULL,NULL,&op->obj_data);
00154   return RTOp_TOp_inv_of_difference_init(alpha,op);
00155 }
00156 
00157 int RTOp_TOp_inv_of_difference_destroy( struct RTOp_RTOp* op )
00158 {
00159   op->vtbl->obj_data_vtbl->obj_free(NULL,NULL,&op->obj_data);
00160   op->obj_data  = NULL;
00161   op->vtbl      = NULL;
00162   return 0;
00163 }
00164 
00165 int RTOp_TOp_inv_of_difference_init( RTOp_value_type alpha, struct RTOp_RTOp* op )
00166 {
00167     RTOp_value_type *ptr_alpha = (RTOp_value_type*)op->obj_data;
00168     *ptr_alpha = alpha;
00169     return 0;
00170 }
00171 
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